Senior C# Full Stack Developer

Job Title: Senior C# Full Stack Developer – Cloud & Platform Engineering

Company: AXIOM Systems

Location:  Remote

Employment Type: Full‑Time

Work Authorization: Must be authorized to work in the U.S. — no sponsorship available for this position

About Us

AXIOM Systems is a healthcare technology company focused on building highly scalable, secure platforms for transaction processing, system integration, and operational visibility. Our solutions support mission‑critical workloads for health plans and providers in a regulated, high‑availability environment.

We are modernizing our platform architecture with cloud‑native, event‑driven, and containerized technologies and are looking for experienced engineers to help lead that evolution.

Role Overview

We are seeking a Senior C# Full Stack Developer with strong experience building cloud‑native, distributed systems. This role spans backend services, APIs, data persistence, and web‑based user interfaces, with a strong emphasis on Kubernetes‑based deployments, AWS services, and asynchronous messaging.

Healthcare or EDI experience is not required, but familiarity with complex, data‑driven domains is highly valued.

Key Responsibilities

• Design, develop, and maintain C#/.NET applications in a modern, cloud‑native architecture
• Build and evolve RESTful and event‑driven backend services
• Develop and maintain web‑based user interfaces for operational workflows and system visibility
• Design services that run reliably in Kubernetes environments
• Implement autoscaling and event‑driven processing patterns (e.g., KEDA)
• Integrate with message brokers for asynchronous processing and decoupled system communication
• Work with PostgreSQL and other relational databases to design schemas and optimize performance
• Deploy and operate services using AWS cloud services
• Collaborate with domain experts to translate complex business needs into technical solutions
• Participate in design reviews, code reviews, and production support activities
• Apply secure coding practices and ensure protection of sensitive data
• Contribute to platform modernization, reliability, scalability, and performance initiatives

Required Qualifications

• 5+ years of professional software development experience
• Strong proficiency in C# and .NET
• Experience building full stack applications (backend services + web UI)
• Hands‑on experience deploying and operating applications in Kubernetes
• Experience with AWS services (compute, storage, messaging, or networking)
• Experience working with message brokers (e.g., RabbitMQ, ActiveMQ Artemis)
• Strong experience with PostgreSQL
• Solid understanding of distributed systems, asynchronous processing, and resiliency patterns
• Proficiency in modern front-end technologies (JavaScript/TypeScript and React)
• Ability to reverse engineer existing systems, work effectively with legacy code, and troubleshoot issues in complex codebases
• Comfort supporting and bug-fixing regulated production environments with minimal downtime (triage, root-cause analysis, safe/controlled releases)
• Ability to estimate delivery timelines, communicate tradeoffs, and consistently meet project deadlines
• Strong communication skills and comfort collaborating with cross-functional teams; proactive, unafraid to raise risks, ask questions, and align priorities
• Proficiency with Git‑based source control

Preferred / Nice‑to‑Have Skills

• Experience with KEDA or similar event‑driven autoscaling technologies
• Experience designing event‑driven or microservices architectures
• Familiarity with CI/CD pipelines and containerized deployments
• Prior experience in regulated or high‑compliance environments (healthcare, finance, insurance, etc.)
• Exposure to healthcare data, HIPAA, or EDI/X12 (nice to have, not required)

What We Offer

• Opportunity to work on modern cloud‑native platforms with real‑world scale
• Challenging engineering problems involving distributed systems and high‑volume processing
• Collaborative team with deep technical and domain expertise
• Competitive compensation and benefits
• Long‑term platform modernization initiatives with real architectural influence